December 11th, 2018, 11:08
December 11th, 2018, 14:41
December 11th, 2018, 15:20
December 11th, 2018, 15:51
Offset(h) 00 02 04 06 08 0A 0C 0E
00000030 5248 0400 4222
00000040 AA22 9D22 5B22
4222 head #0
AA22
9D22
5B22 head #3
Offset(h) 00 02 04 06 08 0A 0C 0E
00000040 55AA 0400 69FE B3EF 3000
00000050 AAFC F2FF AEFF A600 FAFE 4200 B8FE D004
00000060 C1F0 3C01 24FB 0101 4000 65FF 96FF DAFD
00000070 E201 DB04 FFEC E8FF 45FB 57FE 0B00 5400
00000080 1003 5CFF 89FE F905 55EB 7601 FFF9 B400
00000090 2B00 F900 7300 A1FE C400 0340
69FE B3EF 3000 AAFC F2FF AEFF A600 FAFE 4200 B8FE head #0
D004 C1F0 3C01 24FB 0101 4000 65FF 96FF DAFD E201
DB04 FFEC E8FF 45FB 57FE 0B00 5400 1003 5CFF 89FE
F905 55EB 7601 FFF9 B400 2B00 F900 7300 A1FE C400 head #3
0340
Offset(h) 00 02 04 06 08 0A 0C 0E
00000090 0340 80AA D80E
000000A0 3A01 D80E 3A01 D80E 3A01 D80E 3A01 0000
000000B0 0000 0000 0000 0000 0000 0000 0000
4613
000000C0 3A01 4613 3A01 4613 3A01 4613 3A01 0000
000000D0 0000 0000 0000 0000 0000 0000 0000
D80E 3A01 head #0
D80E 3A01
D80E 3A01
D80E 3A01 head #3
0000 0000
0000 0000
0000 0000
0000 0000
4613 3A01 head #0
4613 3A01
4613 3A01
4613 3A01 head #3
0000 0000
0000 0000
0000 0000
0000 0000
Offset(h) 00 02 04 06 08 0A 0C 0E
000000F0 7B27
00000100 3A01 7B27 3A02 7B27 3A02 8E28 3A02 0000
00000110 0000 0000 0000 0000 0000 0000 0000
532B
00000120 3A02 352B 3A01 352B 3A01 902A 3A02 0000
00000130 0000 0000 0000 0000 0000 0000 0000
7B27 3A01 head #0
7B27 3A02
7B27 3A02
8E28 3A02 head #3
0000 0000
0000 0000
0000 0000
0000 0000
532B 3A02 head #0
352B 3A01
352B 3A01
902A 3A02 head #3
0000 0000
0000 0000
0000 0000
0000 0000
Offset(h) 00 02 04 06 08 0A 0C 0E
000001C0 90AA 0000 80C4 F314 875F 1215 5BB8 1A15
000001D0 729B 1915 4643 F005 59DB 7F05 FD4E 8405
000001E0 FD4E 8405
80C4 F314 875F 1215 head #0
5BB8 1A15 729B 1915
4643 F005 59DB 7F05
FD4E 8405 FD4E 8405 head #3
Offset(h) 00 02 04 06 08 0A 0C 0E
00000200 97FF 55AA 0000 0000 0000 0000 0000 0000
00000210 0000 0000 0000 0898 AA0A 0000 0000 0000
00000220 0000 0000 0000 0000 0000 0000 0000 0000
December 11th, 2018, 17:13
December 11th, 2018, 18:24
Offset(h) 00 02 04 06 08 0A 0C 0E
00000050 5248 0800 6423 4723 9023 4B23 5923 ..RH.........
^^^^ 8 heads
00000060 0F23 6F23 9E23
6423 head #0
4723
9023
4B23
5923
0F23
6F23
9E23 head #7
Offset(h) 00 02 04 06 08 0A 0C 0E
00000060 55AA 0800 EDFF 35E6 AFFD
^^^^ 8 heads
00000070 C9FA 3200 B6FF 6800 F900 7A01 38FF EB04
00000080 09E2 DFFE C4FB 94FE 2A01 CB00 4900 2A00
00000090 B1FF E900 6DE4 8AFE B7FC 3AFE 15FF 0201
000000A0 D400 5101 6100 2306 74E2 AF00 DFFD 91FF
000000B0 C8FE FC00 6501 5CFE 1D00 5EFF 31E4 2FFF
000000C0 0AFB 4C00 9DFE 4201 4003 45FF 8CFF 8204
000000D0 69E0 8BFF 02FB 3200 2A02 9A00 7901 F5FE
000000E0 72FF 3901 F4E2 4EFF 0AFB 7100 7901 28FF
000000F0 3301 EB00 4D00 F804 90E3 64FF 3AFA C3FE
00000100 FAFF 1F00 4702 1100 5300 0180
EDFF 35E6 AFFD C9FA 3200 B6FF 6800 F900 7A01 38FF head #0
EB04 09E2 DFFE C4FB 94FE 2A01 CB00 4900 2A00 B1FF
E900 6DE4 8AFE B7FC 3AFE 15FF 0201 D400 5101 6100
2306 74E2 AF00 DFFD 91FF C8FE FC00 6501 5CFE 1D00
5EFF 31E4 2FFF 0AFB 4C00 9DFE 4201 4003 45FF 8CFF
8204 69E0 8BFF 02FB 3200 2A02 9A00 7901 F5FE 72FF
3901 F4E2 4EFF 0AFB 7100 7901 28FF 3301 EB00 4D00
F804 90E3 64FF 3AFA C3FE FAFF 1F00 4702 1100 5300 head #7
0180
Offset(h) 00 02 04 06 08 0A 0C 0E
00000100 80AA 3011
00000110 3701 3011 3701 B90F 3702 B90F 3702 B90F
00000120 3702 B90F 3703 B90F 3702 3011 3701
3011 3701 head #0
3011 3701
B90F 3702
B90F 3702
B90F 3702
B90F 3703
B90F 3702
3011 3701 head #7
Offset(h) 00 02 04 06 08 0A 0C 0E
00000230 90AA 0000 B191 7DF2 9AAE 7EF2 5624 88F2
00000240 CBB2 88F2 B2B0 83F2 C993 82F2 F63A 7AF2
00000250 DF57 7BF2 4A2A 55FF BFB8 55FF 3347 56FF
00000260 610D 54FF 1C64 57FF D12C 9FFF 0012 A3FF
00000270 BB68 A6FF
B191 7DF2 head #0
9AAE 7EF2
5624 88F2
CBB2 88F2
B2B0 83F2
C993 82F2
F63A 7AF2
DF57 7BF2 head #7
4A2A 55FF head #0
BFB8 55FF
3347 56FF
610D 54FF
1C64 57FF
D12C 9FFF
0012 A3FF
BB68 A6FF head #7
December 11th, 2018, 18:28
Offset(h) 00 02 04 06 08 0A 0C 0E
00000050 5248 ..............RH
00000060 0600 FA21 BA20 EC20 C51F 2720 4520 0000
^^^^ 6 heads
00000070 0000 0000 0000
FA21 head #0
BA20
EC20
C51F
2720
4520 head #5
0000
0000
0000
0000
Offset(h) 00 02 04 06 08 0A 0C 0E
00000070 55AA 0600 7421 59F4 B8FD
^^^^ 6 heads
00000080 9FF6 EFFE 9100 7B01 C400 0A00 12FF A4F5
00000090 35EE 9401 29FB 0701 DA00 C8FE 56FF 8601
000000A0 1CFF B01D 0FEF C6FE 34F5 06FE 5502 D9FF
000000B0 4000 8900 ACFF CFEA 76EF 9000 38F8 A500
000000C0 66FF 5C00 0500 A600 7000 B00D F2F1 E1FE
000000D0 6CFA 64FF CE00 03FF CAFF E9FE 6C00 5DEE
000000E0 B0F8 5EFF 28F9 0001 6DFF EEFF BB01 D300
000000F0 CAFF 0000 0000 0000 0000 0000 0000 0000
00000100 0000 0000 0000 0000 0000 0000 0000 0000
00000110 0000 0000 0000 0000 0000 0000 0000 0000
00000120 0000 0000 0000 0000 0000 0000 0000 0000
00000130 0000 0000 0000 0000 0000 0000 0000 0000
00000140 0000 0340
7421 59F4 B8FD 9FF6 EFFE 9100 7B01 C400 0A00 12FF head #0
A4F5 35EE 9401 29FB 0701 DA00 C8FE 56FF 8601 1CFF
B01D 0FEF C6FE 34F5 06FE 5502 D9FF 4000 8900 ACFF
CFEA 76EF 9000 38F8 A500 66FF 5C00 0500 A600 7000
B00D F2F1 E1FE 6CFA 64FF CE00 03FF CAFF E9FE 6C00
5DEE B0F8 5EFF 28F9 0001 6DFF EEFF BB01 D300 CAFF head #5
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0000 0000 0000 0000 0000 0000 0000 0000 0000 0000
0340
Offset(h) 00 02 04 06 08 0A 0C 0E
00000280 0100 9110 2A11 7811 FB12
00000290 2711 0113 0010 0010 0010 0010 3841 F23E
000002A0 DB3D EC38 FD3E D938 8743 8743 8743 8743
9110 head #0
2A11
7811
FB12
2711
0113 head #5
0010
0010
0010
0010
3841 head #0
F23E
DB3D
EC38
FD3E
D938 head #5
8743
8743
8743
8743
December 12th, 2018, 16:10
sin wrote:Conclusion:-:-
The highlighted area in the edited 4F photograph displays the threshold point. Any change made beyond this point has less effect on the SA. Any changes made before this point or at this point can disallow SA access.
December 12th, 2018, 16:17
fzabkar wrote:
- Code:
80C4 F314 875F 1215 head #0
5BB8 1A15 729B 1915
4643 F005 59DB 7F05
FD4E 8405 FD4E 8405 head #3
80C4 F314 head #0
875F 1215
5BB8 1A15
729B 1915 head #3
4643 F005 head #0
59DB 7F05
FD4E 8405
FD4E 8405 head #3
December 12th, 2018, 16:43
December 12th, 2018, 17:15
pcimage wrote:When I get some more time, I’ll try and figure out which are the most important sections of it. But it may take a lot of trial and error!
December 13th, 2018, 0:07
December 13th, 2018, 5:26
fzabkar wrote:sin wrote:Conclusion:-:-
The highlighted area in the edited 4F photograph displays the threshold point. Any change made beyond this point has less effect on the SA. Any changes made before this point or at this point can disallow SA access.
This observations seems contrary to expectations. AIUI, this last section of the module contains the adaptives for the dual stage actuator.
https://forum.acelaboratory.com/viewtopic.php?t=9854
viewtopic.php?f=1&t=35523
pcimage wrote:Two drives of same fw version and 1 day apart in manufacture date, non-native 4F prevents drive from working.
December 13th, 2018, 5:29
fzabkar wrote:If the dual-stage actuator is the reason for the extra adaptives, then could the problem of a missing ROM be solved with donor heads and donor head adaptives?
December 13th, 2018, 6:32
fzabkar wrote:pcimage wrote:When I get some more time, I’ll try and figure out which are the most important sections of it. But it may take a lot of trial and error!
Assuming my observations are correct, I would limit any edits to the primary head. I would select one particular adaptive value and then adjust it up and down until the drive fails to ID. This will tell you the sensitivity (tolerance) of each adaptive. There may be better approaches, though.
December 13th, 2018, 6:37
December 13th, 2018, 15:38
December 14th, 2018, 18:42
sin wrote:So what I will try tomorrow is, I shall bypass the SA in rom and just keeping head 0 or head 1 engaged while only manipulating the values as marked by you.
December 16th, 2018, 14:50
.fzabkar wrote:It might be interesting to see how a drive behaves if we could disable the piezo actuator, assuming this is the problem. I'm wondering whether disabling this second stage actuator would still allow the drive's primary actuator to follow the track. Perhaps this would be a better approach than feeding incorrect adaptives to the secondary actuator.
That said, the HDA connector doesn't appear to have any aditional pins (18), so I am at a loss to understand how the piezoelectric transducers are driven. I would expect that the motor controller would generate a driving voltage, and that this single voltage source would be multiplexed to the selected head via an IC on the headstack. Alternatively, it could be that all PZTs are activated at the same time.
Perhaps a photo of the preamp would help?
December 16th, 2018, 15:46
sin wrote:But why do I have a feeling (or lack of experience possibly) that there are no secondary set of heads.
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